Shareholders' Equity (Changes in the Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax	$ (4)	$ (1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	6,330	6,059	$ 6,828
Amounts reclassified to earnings	0	0	(23)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(25)	13	33
Balance at end of period	1,792	6,330	6,059
Foreign Currency Translation Adjustments and other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(95)	(113)
Other comprehensive income/(loss), net before reclassifications	3	18
Amounts reclassified to earnings	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	3	18
Balance at end of period	(92)	(95)	(113)
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	16	21
Other comprehensive income/(loss), net before reclassifications	(23)	0
Amounts reclassified to earnings	(5)	(5)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(28)	(5)
Balance at end of period	(12)	16	21
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(79)
Balance at end of period	(104)	(79)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(79)	(92)	(125)
Other comprehensive income/(loss), net before reclassifications	(20)	18
Amounts reclassified to earnings	(5)	(5)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(25)	13	33
Balance at end of period	$ (104)	$ (79)	$ (92)